Easiest way to implode() a two-dimensional array?

Question

I\'m new to PHP, and don\'t have quite the grip on how it works. If I have a two dimensional array as such (returned by a database):

array(3) {   
    [0]=&         


        

Answer 1

One line command

implode(',', array_map('implode', $arr, array_fill(0, count($arr), '')))